Abstract
The standard enthalpies of formation (Δ f H 0 298.15) of Ce 3Ga 2, CeGa, CeGa 2 and CeGa 6 at 298.15 were determined by high temperature liquid gallium solution calorimetry to be −(71.1±2.7), −(84.1±1.9), −(51.5±1.4) and −(48.2±3.7) kJ gatom −1 respectively. The enthalpies of formation of Ce 0.21Ga 0.79 at 1125 K and CeGa 6 at 876 K were determined by using precipitation calorimetry to be −(36.7±2.9) and −(52.8±3.0) kJ gatom −1. The partial enthalpies of solution of cerium in liquid gallium at infinite dilution (ΔH̄ ∞ Ce) at 874 K and 1094 K were determined to be −(186.4±5.4) and −(213.0±3.7) kJ gatom −1 respectively.
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